code: def test_property_font_size(prop):
      assert isinstance(prop.font_size, int)
      value = 10
      prop.font_size = value
      assert prop.font_size == value
  
imports: import os
  import numpy
  import pytest
  import pyvista
label_desc: Use image node_id 18 for calling a global function with example usage: test_property_font_size(prop) without return types